RNGR.net is sponsored by the USDA Forest Service and Southern Regional Extension Forestry and is a colloborative effort between these two agencies.

U.S. Department of Agriculture USDA Forest Service Southern Regional Extension Forestry Southern Regional Extension Forestry

Skip to content. | Skip to navigation

Home → Publications → Tree Improvement and Genetics → Southern Forest Tree Improvement Conference → 24th Southern Forest Tree Improvement Conference (1997) → White Pine Cone Beetle Population Trends in North Carolina and Tennessee Seed Orchards 1986-1987